Grayscale and RGB sliders

If you open a coloured image, conversion from colour to grayscale is needed. You can choose between a predefined colour to grayscale formula (SimpleAverage, WeightAverage or OpticalCorrect) or select the «Custom» option and manually define the dominance of each RGB component.

Grayscale conversion options

«Custom» is useful when importing graphic images such as clipart, and we want to control the darkness/lightness of individual colour.

Brightness, contrast and BW threshold

With brightness and contrast you can darken or lighten the image, as well as increase the contrast.

With BW option you can activate a threshold on the image: pixels brighter of the threshold will be considered white, darken will become black.

BW threshold remove red pixels in this example

All of these options affect how the various tools process the image and produce the final result.

Since different materials behave differently when they are engraved with laser, it is essential to play with these options to find the best combination for the desired result.